To solve this problem it is necessary to apply the concepts related to frequency, wavelength and speed of sound.
The frequency is defined as,
Where,
Speed of sound
Calculating the values of the frequencies with the two wavelengths we have
And,
Therefore the frequency of the beat is
Finally we can get the wavelenght through the same equation, then
We can conclude that the frequency of the beats these musicians hear when they play together is 3.22 Hz and the out of tune guitarists should tighten his guitar string to correctly tune it.
Answer:
Explanation:
Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Exothermic reactions are accompanied by an increase in temperature of the reaction mixture.
8N - 6cm
10N - 7.5cm
14N - 10.5cm
Given: Mass m = 5.00 Kg; Height h = 12 m; Time t = 15 s
Required: Power P = ?
Formula: P = Fd/t = mgh/t
P = (5.0 Kg)(9.8 m/s²)(12 m)/15 s
P = 39.2 Kg.m²/s² or
P = 39.2 J
Answer:
Part A:
Time taken by the snake to reach its top speed is 1.28571 sec.
Part B:
Snake travels 2.0828 m in that time
Part C:
Mongoose have a chance to catch the black mamba
Explanation:
Part A:
According to first equation of motion:
v_f is top speed
v_i is initial or minimum speed
t is time
a is acceleration
Time taken by the snake to reach its top speed is 1.28571 sec
Part B:
According to Second equation of motion:
v_i=0
Snake travels 2.0828 m in that time
Part C:
Distance covered by black mamba is 2.0828 m which is less than its length 3.12 m
2.0828 m<3.12 m
Mongoose have a chance to catch the black mamba